PURPOSE: To collect the evidences of an incendiary site as well as to prevent an incendiary fire of a push-button, by providing a thermosensible means to perceive the ambient temperature and to output a temperature signal, in the push-button of an elevator cage, outputting a voice alarm according to the condition, and furthermore, taking pictures of the condition and the like. ;CONSTITUTION: A thermosensible sensor 3 is stuck in the head of a push-button of a destination push-button and the like which is liable to be burned by a lighter, and a temperature signal is fed to a processing device 2 through a thermosensible sensor lead wire 3a. In the processing device 2, the value of a standard level and the value of the perceived temperature from the sensor 3 are compared, and when the perceived temperature is higher, a voice composing device is started, and a warning message in the cage 1 is delivered to a speaker 4 through a lead wire 4a. When the incendiary action is continued in such a condition, the value of the starting output level of a camera 5 stored in the processing device 2, and the value of the perceived temperature from the sensor 3 are compared, and when the perceived temperature is higher, a starting signal is output to the camera 5, which takes pictures of evidences in the cage 1.;COPYRIGHT: (C)1994,JPO&Japio
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